Masterpiece Theater at 8 pm Sunday and 8 pm Saturday presents part four of Downton Abbey, Series II. In the climactic battle of the war, Matthew and William go over the top to an uncertain fate. Vera plays a cruel endgame with Bates and Anna, and Daisy faces the severest test of her life.

Sherlock must solve perplexing and dangerous puzzles specifically laid out for him on Masterpiece Mystery! at 9 pm Sunday. Can he and Watson catch up to the villain before innocent people are harmed?

Legends of the 1960s unite in this live performance special, 60s Pop, Rock & Soul at 9 pm Monday. Co-hosts Peter Noone and Davy Jones sing their biggest hits focusing on the years 1965 – 1969.

Annie Oakley: American Experience at 7 pm Tuesday tells the story of the five-foot-tall sharpshooter who pulled herself out of the depths of poverty to become known the world over as a symbol of the Wild West.

Experimental modern rock rules with Florence + the Machine and Lykke Li on Austin City Limits at 10 pm Wednesday and Friday.

Singer-Songwriter Nick Lowe discusses his career on Overheard with Evan Smith at 7 pm Thursday.

Arts in Context looks at what made the Trans-Pecos town of Marfa nestled near Big Bend National Park the desert destination it is today in “The Light and The Land” at 7:30 pm Thursday.

Chet heads to “cowtown” to visit the historic Fort Worth Stockyards, take a horseback ride, visit their art museums, and attend the Stockyards Rodeo on The Daytripper at 8 pm Thursday.

Independent Lens at 9 pm Thursday presents “Daisy Bates: First Lady of Little Rock”. The documentary tells the story of her life and public support of nine black students to attend the all-white Central High School in Little Rock, Arkansas, which culminated in a constitutional crisis — pitting a president against a governor and a community against itself.

Michael Feinstein’s American Songbook at 9 pm Friday explores how technology has preserved – and altered – the way we think about the great songs and singers of the past.